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Finding the Fourth Proportional to 2,230.88, 3,345.08 and 915.56

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Solution

The fourth proportional to 2,230.88, 3,345.08 and 915.56 is: 1,372.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,230.88 : 3,345.08 = 915.56 : x
  2. Step 2: Convert to fraction form
    2,230.88/3,345.08 = 915.56/x
  3. Step 3: Cross multiply
    2,230.88x = 3,345.08 × 915.56
  4. Step 4: Simplify right side
    2,230.88x = 3,062,600.14
  5. Step 5: Solve for x
    x = 3,062,600.14/2,230.88
  6. Step 6: Final answer
    x = 1,372.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.